patch applied (ghc): Move global register saving from the backend to codeGen (CPS specific parts)

[Simon Marlow]

Fri May 25 12:57:32 PDT 2007  Michael D. Adams <t-madams at microsoft.com>
  * Move global register saving from the backend to codeGen (CPS specific parts)

    M ./compiler/cmm/CmmBrokenBlock.hs -9 +8
    M ./compiler/cmm/CmmCPS.hs -3 +2
    M ./compiler/cmm/CmmLive.hs -1 +1